package com.atguigu.lease.web.admin.service.impl;

import com.atguigu.lease.common.constant.RedisConstant;
import com.atguigu.lease.common.exception.LeaseException;
import com.atguigu.lease.common.result.ResultCodeEnum;
import com.atguigu.lease.common.utils.JwtUtil;
import com.atguigu.lease.model.entity.SystemUser;
import com.atguigu.lease.model.enums.BaseStatus;
import com.atguigu.lease.web.admin.service.LoginService;
import com.atguigu.lease.web.admin.service.SystemUserService;
import com.atguigu.lease.web.admin.vo.login.CaptchaVo;
import com.atguigu.lease.web.admin.vo.login.LoginVo;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.wf.captcha.SpecCaptcha;
import com.wf.captcha.base.Captcha;
import org.apache.commons.codec.digest.DigestUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.ReactiveRedisOperations;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;
import org.springframework.util.ObjectUtils;

import java.util.UUID;
import java.util.concurrent.TimeUnit;


@Service
public class LoginServiceImpl implements LoginService {
    @Autowired
    private RedisTemplate<String, Object> redisTemplate;
    @Autowired
    private SystemUserService systemUserService;

    @Override
    public CaptchaVo getCaptcha() {
        //创建验证码的图片工具类
        SpecCaptcha specCaptcha = new SpecCaptcha(130, 48, 4);
        specCaptcha.setCharType(Captcha.TYPE_DEFAULT);
        //生成验证码图片的base64和验证码的正确字符串
        String image = specCaptcha.toBase64(); // 【1 2 3 4】
        String code = specCaptcha.text().toLowerCase(); // 1234
        //正确字符串+uuidkey+有效时间存储到redis中
        String key = RedisConstant.ADMIN_LOGIN_PREFIX + UUID.randomUUID().toString().replaceAll("-", "");
        redisTemplate.opsForValue().set(key, code, RedisConstant.ADMIN_LOGIN_CAPTCHA_TTL_SEC, TimeUnit.SECONDS);
        //uuidkey+验证码图片 返回
        return new CaptchaVo(image, key);
    }

    @Override
    public String login(LoginVo loginVo) {
        //1.检查验证码
        //1.1 检查验证码是否为空
        if (ObjectUtils.isEmpty(loginVo.getCaptchaCode())) {
            throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_NOT_FOUND);
        }
        //1.2检查redis中的验证码是否过期
        String key = (String) redisTemplate.opsForValue().get(loginVo.getCaptchaKey());
        if (ObjectUtils.isEmpty(loginVo.getCaptchaKey())) {
            throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_EXPIRED);
        }
        //1.3对比输入和redis，检查验证码是否正确
        if (!key.equalsIgnoreCase(loginVo.getCaptchaCode())) {
            throw new LeaseException(ResultCodeEnum.ADMIN_CAPTCHA_CODE_ERROR);
        }
        //2.检查账号和密码内容
        LambdaQueryWrapper<SystemUser> systemUserLambdaQueryWrapper = new LambdaQueryWrapper<>();
        systemUserLambdaQueryWrapper.eq(SystemUser::getUsername, loginVo.getUsername());
        SystemUser systemUser = systemUserService.getOne(systemUserLambdaQueryWrapper);
        //2.1检查账号是否正确
        if (systemUser == null) {
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_NOT_EXIST_ERROR);
        }
        //2.2检查密码
        String password = DigestUtils.md5Hex(loginVo.getPassword());
        if (!systemUser.getPassword().equals(password)) {
            throw new LeaseException(ResultCodeEnum.ADMIN_ACCOUNT_ERROR);
        }
        //2.3检查账号状态是否封禁
        if(systemUser.getStatus()== BaseStatus.DISABLE){
            throw new LeaseException(ResultCodeEnum.APP_ACCOUNT_DISABLED_ERROR);
        }
        //3.使用jwt生成token
        return JwtUtil.createToken(systemUser.getId(),systemUser.getUsername());
    }
}
